Planooliaph co



W. MACLEOD.

FURNACE FOR'MELTING METALS.

APPLICATION FILED DEC.2.19!6.

Patented Aug 5, 1919.

2 SHEETS-SHEET 1.

Izn/en for 11w C OLL'MBIA PLANOGRAPH C0 WASHINGTON, D c.

W. MACLEOD.

FURNACE FOR MELTING METALS. APPLICATION FILED DEC-2.1916.

1 ,812, 1 29. Patented Aug. 5, 1919.

2 SHEETS-SHEET 2.

THE COLUMBlA PLANDGRAPH co., WASHINGTON, D. C-

WALTER MACLEOD, or cnvcrmvari, 01110.

summon Eon iiinn'rme METALS.

amaze.

Specification of Letters Patent. I Pajbghted Aug. 5 1919.

Application filed than. 2, i916. seal N... 134,751.

l l l I To all whom at may concern. I

Be it known that I, VVAL'IER Macnuon a citizen of the United States, residing atthe city of Cincinnati, inthe county Hamil; ton and State of Ohio, have invented certain new and useful Improvements inl urnaces for Melting Metals, of which the fol lowing is a specification. y

The object of my invention is to produce a furnace for melting metals formed of two separate chambers, one, being the furnace proper for producing the heat units or heat waves and the other being. the melting pot; the heat produced in the furnace chamber being forced to travel through a duct into the melting pot. In this way I obviate the necessity of using a crucible made of plumbago or equivalent refractory material, and directly heated.

The features and advantages ofjmy in vention will readily become apparent from the following specification and claims.

In the accompanying drawing forming part of this specification;

Figure 1, is a side elevation of my new improved furnace for melting metals, i

Fig. 2, is an end elevation thereof; and

Fig. 3, is a sectional vieW,"taken on the line 3-3 of Fig. 2.

The furnace, in the present instance, is supported on a frame work or base 1, made of suitable material. The furnace proper, which contains one chamber and in which the air or other products are heated, is marked 2 and the other chamber, which forms the melting pot, is marked 3.

The part 3 which forms the melting pot also carries the duct 6 through which the heated air waves or heat units pass. At the meeting point between these two parts or sections 2 and 3, at 13, I form a jump joint, to enable the tilting of the melting pot. In furnace part 2 I provide a pocket or chamber 8 and in the melting pot or part 3 I place the pocket or chamber 10.

The furnace 2 is made up of fire brick or equivalent material 4:, and the melting pot 3 of the same material, which is marked 5. The duct 6 is surrounded by fire brick or equivalent material 7.

In the furnace part 2 I form a chamber or air pocket 8, which may be of any size, a short conveyer duct 9 passing therefrom to the duct 6 with which it forms a connecting continuous passageway for hot air or h eat waves or. units In ,this manner, the chamber 8 1S OO l 1l 1 QCl3,ed tO the pocket or chamber 10 in the melting pot 3.

The whole fire brick material issurrounld ed with a retaining and supporting element 12. y H y y, i 1

v The pocket orichamber 8 is provided with a conveyor duct 14 leading therefrom and connecting with an air or blow pipe 15, through which air is blown or forced into and through the chamber 8 through duct 9 and. through duct 6 into the chamber 10 of the melting pot 3, i y i y 2 Under the furnace part 2 I provide a burner 16 :of any appro-vedpform, in. the present instance having handle connections 17 and 18 and19, for gas, oiland air respectively, so that either gas or oil may be used and air provided for better combustion. This burner heats the furnace and the chamber 8 to any desired degree of. heat. .The burner may extend up to chamber 8 if desired. M y y The chamber 10 of .the,,melting pot Bis provided with a lid or cover 20 of any suitable. construction. In ,thepresent instance the lidis provided with ring 21 to which is. attached the chaln 22, this chain being. also connected to handle 23 through agency of short arm 24.. The handle is .connectedto top of furnace part 2 at the point 25. Through the medium of an eccentric connection 26 and pin 27, (shown in dotted lines), the movement of the handle raises the lid and it can be swung out of the way. This is all that need be said about the cover raising means, as any device may be used for raising the cover of the melting pot.

In order to tilt the melting pot I use thefollowing construction.

The melting pot 3 is supported in bearings 28 on short shaft 29, (one at each side) in which it swings in order to be tilted. On one of the shafts 29 I provide a spiral gear 30, which meshes with worm gear 31, the worm gear being carried in brackets 32 through which the shaft 33 passes. On this shaft 33 1 place a miter gear 34: which meshes with miter gear 35 supported in the bearings 36. The miter gear 35 is on a shaft 37 and at the extremity of this shaft I place a hand wheel 38.

By turning the hand wheel 38 motion is imparted to the shaft 37 which turns gear 35 which in turn revolves gear 34L on the shaft the shaft 33 turning with worm gear 31 revolves spiral gear 30, which, beingfast on shafts 29 operates said shafts, which operation tilts the melting pot 3, the molten metal pouring out of chamber 10 over spout or lip 39. When the melting pot is tilted the parts break at the jump joint 13.

The chambers in the parts 2 and 3 may be of any size or contour and communicatively connected in any manner found desirable.

'I may use any approved means for forcing air into the hot air chamber 8 and forcing it therefrom. 1

It will readily be understood that by providing two separate chambers, one for producing the heat and the other for melting the metal, by forcing heat waves from the heating chamber to the chamber holding the metal, I form a'unique and eificient apparatus for metal melting and do not need plumbago in crucible form for producing the result sought to be attained. Plumbago and other peculiar refractory materials cannot always be obtained when wanted so I attain the same results as a'crucible of this character in my new metal melting furnace. What Iclaim as new and my invention and desire to secure by Letters Patent is: 1. In a-- furnace for melting metal, two separate sections, one having a chamber for producing heat and the other having a chamher for melting the metal, a passage way leading into the heat producing chamber from below, a passage way extending between the chambers for transmitting the heat Waves for melting the metal, a burner under the heating chamber arran ed so that the flames will pass up into the heating copies of this patent may be obtained for five cents each, by addressing the Washington, D. 0."

air intake approximately in the same hori- 1 zontal line as the passage way to the melting chamber, a jump joint between said heating chamber and melting chamber, and means for tilting the melting chamber.

2. In a furnace for melting metal, two separate sections, one having a chamber for producing heat and the other having a chamber for melting the metal, a passage way leading into the heat producing chamber from below, a passage way extending between the chambers for transmitting the heat waves for melting the metal, a burner under the heating chamber arranged so that the flames will pass up into the heating chamber, a passage way from the heating chamber extending to the outside thereof for the intake of air to produce intensity of heat and quicken the heat waves through said passage way into the melting chamber, said air intake approximately in the line as the passage way to the melting chamber, a jump joint between said heating chamber and melting chamber, and means for tilting the melting chamber, said chambers made of a hard brick or clay and surrounded by an iron jacket.

Witness my hand at Cincinnati Ohio, No- Vember 29th 1916.

WALTER MACLEOD.

HARRY M. RI'I'IMEYER.

Commissioner of Patents,

same horizontal 

